Daniel mcfarlan moore



(No Model.)

, D. McP. MOORE. PHOSPHORBSGBNT BLBGTRIGAL ILLUMINATION BY MBTALLIGUOATING UPON GLASS. No. 565,776,. Patented Aug. 11', 1896-.

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WITNESSES: F INVENTOI? 'N-ITED STATES DANIEL MGEARLAN MOORE, OF NEW YORK, N. Y., ASSIGNOR TO THE MOORE ELECTRICAL COMPANY, OF SAME PLACE.

PHOSPHORESCENT ELECTRICAL ILLUMINATION BY METALLIC COATING UPON GLASS.

SPECIFICATION forming part of Letters Patent No. 565,776, dated August 11, 1896. Application filed .Tanuary24,1895. Renewed July 1, 1896. Serial No. 597,783. (No model.)

To all whom it may concern.-

Be it known that I, DANIEL MCFARLAN MOORE, a citizen of the United States, and a resident of New York, county and State of New York, have invented certain new and useful ImprovementsinPhosphorescentElectrical Illumination by a Metallic Coating upon Glass, (Case No. 9,) of which the following is a specification.

The invention herein set forth relates to the production of light upon a metallic coating painted upon the interiorsurface of an evacuated inclosure formed of a transparent material.

I 5 Figures 1 and 1 are respectively an elevation and a side view of one. form of the de vice. Figs. 2 and 2 are respectively a plan and an elevation of another form of the device. Fig. 3 shows how the device may be further modified. Fig. 4 shows the invention combined with means for producing a maximum amount of light within a given space.

The device shown in Figs. 1 and 1 consists, essentially, of two flat glass plates at and a, the one provided with a projecting ridge 1), which is ground and presses upon theedge of the plate a. The edges in contact are lettered c. When placed together, an atmospheric space is formed and lettered d. This is evacuated at a stem 6. The surface of one of the glass plates inside of the evacuated space is covered with a compound of metallic powder, such as aluminium. The coating thus formed is lettered f. The vibrator for producing the luminosity is located in the stem 6, and a magnet g is outside and within inductive relation of the armature h. This armature is adapted to move backward and forward and break the circuit of the generator 2' at the contactsj within the vacuum. One

of the terminals It electrically connects with the coating f. The generator need be but an ordinary dynamo or galvanic battery, and the current may be either pulsating, alternating,

or direct.

When the vibrator, consisting of the contacts at j, one of which is flexible and elastic, is set into operation, the coating f becomes a uniform sheet of light as far as the appearance thereof is concerned, and this light is consequently radiated from as large a surface as that of the coating itself, which may be very thin, in fact as thin as it is possible to make it. This article may be used for purposes of illumination.

In Figs. 2 and 2 the construction is substantially the same, except that the exhausted inclosure consists of an ordinary va cuumbulb, the interior of which is coated throughout a portion of its interior surface. The circuit is from the generator i into the bulb through the contactsj, then to a brush Z, which rests upon the coating f, then throiilgh the coating to the brush Z,then out of the bulb and through V the magnet g for operating the vibrator having an armature 7b and contacts j.

In Fig. 3 the construction is substantially the same, except that the evacuated inclosure is in the form of a U-tube and the coating f covers a portion of the interior surface. In this case the coating f has no return-circuit.

It is in contact merely with one of the brushes, as, for example, the brush Z. N 0 other brush Z is needed.

In Fig. 4 the device is so modified as toproduce a greater amount of light in the evacuated space. To this end there are extending through the vacuum concentric convolutions of the conductors m n, which extend from the support 0 through the bulb, and are attached So at the other end to the other end of the bulb at o, and near the support 0 they are elec trically connected to one of the terminals of the generator 2 These convolutions need have no return-circuits. 8 5

lVhen the generator is operated, the coatingfand the convolutions cause the mass of light, which is radiated from every particle of the convolutions and of the coating, so that when added together a large amount of illumination is obtained. The residual atmosphere of the bulb also appears to be, and undoubtedly is, a source of light on account of some kind of electrical disturbance or light set up in the atmosphere within the bulb. 5

I claim as my invention 1. A phosphorescent 'illuminator, consisting of the combination of an evacuated inclosure, a metallic coating formed upon the interior surface thereof, relatively yielding IOO electric terminals within the evacuated inclosure, an electric conductor connecting one of the terminals with'the coating, and means for rapid-lyalternately opening and closing the terminals.

2. A phosphorescent illuminator, consisting of the combination of an evacuated inclosure, a metallic coating formed upon the interior surface thereof, relatively yielding electric terminals Within the evacuated inclosure, an electric conductor connecting one of the terminals with the coating, and concentric convolutions of Wire extending from one of the terminals through the evacuated space.

3. The combination with glass p1ates,between which is a rarefied atmosphere, of a metallic coating upon oneof the plates on its inner surface, relatively yielding loose elecand closing the circuit Within the vacuum.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of two Witnesses, this 21st day of December, 189i.

D. MOFARLAN MOORE.

Witnesses:

WM. R. WARREN, EDWARD P. THOMPSON. 

